1. **State the problem:** We have a drum filled with rice that weighs 300 kg 16 g 230 g (interpreted as 300 kg and 16.230 kg total since the user might mean 16 kg 230 g). The empty drum weighs 21 kg 765 g. We want to find the mass of the rice only. 2. **Convert all weights to a consistent unit:** Convert grams to kilograms for easier subtraction. - Total weight of drum + rice: 300 kg + 16 kg + 0.230 kg = 316.230 kg (interpreting 16 kg 230 g as 16.230 kg) - Weight of empty drum: 21 kg + 0.765 kg = 21.765 kg 3. **Calculate the mass of the rice:** Subtract the empty drum mass from the total mass. $$316.230 - 21.765 = 294.465$$ 4. **Convert final result back to kg and grams:** 294.465 kg is 294 kg and $$0.465 \times 1000 = 465$$ grams. **Final Answer:** The mass of the rice in the drum is **294 kg 465 g**.